EP3624477A1 - Verfahren zur übertragung eines uplink-signals, endgerät und netzwerkvorrichtung - Google Patents

Verfahren zur übertragung eines uplink-signals, endgerät und netzwerkvorrichtung Download PDF

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Publication number
EP3624477A1
EP3624477A1 EP17911108.3A EP17911108A EP3624477A1 EP 3624477 A1 EP3624477 A1 EP 3624477A1 EP 17911108 A EP17911108 A EP 17911108A EP 3624477 A1 EP3624477 A1 EP 3624477A1
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EP
European Patent Office
Prior art keywords
reference signal
zero
resource
uplink reference
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17911108.3A
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English (en)
French (fr)
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EP3624477A4 (de
EP3624477B1 (de
Inventor
Wenhong Chen
Zhi Zhang
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication of EP3624477A4 publication Critical patent/EP3624477A4/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H04L5/10—Channels characterised by the type of signal the signals being represented by different frequencies with dynamo-electric generation of carriers; with mechanical filters or demodulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present disclosure relates to a wireless access technology, and more particularly, to a method, a terminal and a network device for transmitting an uplink signal.
  • a terminal In a new radio (NR) system, a terminal sometimes transmits an upstream reference signal, such as a Sounding Reference Signal (SRS), a Demodulation Reference Signal (DMRS), or a Phase Tracking Reference Signal (PTRS) and the like.
  • an upstream reference signal such as a Sounding Reference Signal (SRS), a Demodulation Reference Signal (DMRS), or a Phase Tracking Reference Signal (PTRS) and the like.
  • SRS Sounding Reference Signal
  • DMRS Demodulation Reference Signal
  • PTRS Phase Tracking Reference Signal
  • Multiple aspects of the present disclosure provide a method, a terminal and a network device for transmitting an uplink signal to ensure reliable transmission of an uplink reference signal of a terminal.
  • a method for transmitting an uplink signal comprising:
  • Another method for transmitting an uplink signal comprising:
  • a terminal is provided in another aspect of the present disclosure, comprising:
  • a network device is provided in another aspect of the present disclosure, comprising:
  • a resource occupied by the zero-power uplink reference signal is further determined based on the configuration information, so that no uplink data is sent on the resource, and/or no non-zero-power uplink reference signal is sent on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • the configuration information is further sent to a terminal, so that no uplink data is received on the resource, and/or no non-zero-power uplink reference signal is received on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • a non-zero-power uplink reference signal is an uplink reference signal that a terminal actually needs to send. If an uplink reference signal is not a zero-power uplink reference signal, it may be considered as a non-zero-power uplink reference signal by default, and a so-called uplink reference signal is the non-zero-power uplink reference signal referred to in this application.
  • FIG. 1 is a schematic flowchart of a method for transmitting an uplink signal according to an embodiment of the present disclosure, as shown in FIG. 1 .
  • NZP ULRS non-zero-power uplink reference signal
  • that perform that the uplink data is not sent on the resource may specifically be: perform rate matching or puncture processing on uplink data on the resource.
  • a performing entity of 101 ⁇ 103 may be a terminal.
  • the main idea of this embodiment is to activate a zero-power uplink reference signal by configuration of a network device and indicating to a terminal.
  • some terminals send an uplink reference signal (that is, a non-zero-power uplink reference signal)
  • other terminals may be simultaneously indicated to perform a resource idle on a corresponding resource, thereby avoiding interference of the uplink reference signals transmitted by other terminals, and improving transmission performance of these uplink reference signals.
  • a resource occupied by the zero-power uplink reference signal is further determined based on the configuration information, so that no uplink data is sent on the resource, and/or no non-zero-power uplink reference signal is sent on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • the ZP ULRS may comprise, but is not limited to, an existing ULRS such as a ZP SRS, a ZP DMRS, or a ZP PTRS, or other ZP that may also be newly defined by a NR system, which is not particularly limited in this embodiment.
  • the NZP ULRS may comprise, but is not limited to, a NZP SRS, a NZP DMRS, or a NZP PTRS, or other NZP ULRS that may also be newly defined by a NR system, which is not particularly limited in this embodiment.
  • the network device may specifically be that receive configuration information of a ZP ULRS sent by a network device through high-layer signaling or Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • a terminal may specifically receive configuration information of a ZP ULRS sent by a network device by using high-layer signaling or DCI.
  • the high-layer signaling may be a radio resource control (RRC) message
  • RRC radio resource control
  • configuration information of the ZP ULRS may specifically be carried by an information element (IE) in a RRC message.
  • the RRC message may be a RRC message in the prior art, such as a RRC CONNECTION RECONFIGURATION message, which is not limited in this embodiment.
  • the configuration information of the ZP ULRS is carried by an existing RRC message with an extensional IE, or the RRC message may also be a RRC message different from that existing in the prior art.
  • the high-layer signaling may be a Media Access Control (MAC) Control Element (CE) message
  • MAC Media Access Control
  • CE Control Element
  • the configuration information of the ZP ULRS may be carried by adding a new MAC CE message.
  • the received configuration information may comprise, but is not limited to, resource configuration information and activation information, which is not specifically limited in this embodiment.
  • the resource configuration information and the activation information may be two pieces of independent information or may be one piece of information, which is not specifically limited in this embodiment.
  • the terminal may receive the resource configuration information of the ZP ULRS sent by the network device through the RRC message.
  • the terminal may receive the activation information of the ZP ULRS sent by the network device through the DCI or MAC CE message.
  • the resource configuration information indicates a resource configured for the ZP ULRS.
  • the resource may comprise, but is not limited to, at least one of a time domain resource, a frequency domain resource, and a sequence resource, which is not specifically limited in this embodiment.
  • the time domain resource may be a time slot in which the ZP ULRS is located or an Orthogonal Frequency Division Multiple (OFDM) symbol.
  • OFDM Orthogonal Frequency Division Multiple
  • the frequency domain resource may be a subcarrier or a physical resource block (RB) occupied by the ZP ULRS.
  • RB physical resource block
  • the sequence resource may be a cycle shift, an Orthogonal Cover Code (OCC) or a sequence Identity (ID) used by the ZP ULRS.
  • OCC Orthogonal Cover Code
  • ID sequence Identity
  • the resource configured for the ZP ULRS may be multiplexed with a resource configured for a corresponding NZP ULRS.
  • the network device may configure same N resources (N is an integer greater than or equal to 1) shared by the NZP ULRS and the ZP ULRS, and then indicate which resource is occupied by the ZP ULRS through the activation information.
  • N is an integer greater than or equal to 1
  • the activation information indicates whether to activate the ZP ULRS, that is, to indicate whether the ZP ULRS is valid.
  • the 'activation' may also be referred to as triggering, and may also be referred to as enabling, which is not specifically limited in this embodiment.
  • the activation information may be represented by 1-bit information. For example, 1 may indicate an activated state; and 0 may indicate an inactivated state.
  • the DCI comprises a non-period trigger signaling of the ZP SRS, which is used to trigger the ZP SRS.
  • the non-period trigger signaling of the ZP SRS may be used as the activation information.
  • the terminal B may be triggered a ZP SRS corresponding to the NZP SRS by a non-period trigger signaling of a ZP SRS, so that no uplink signal is sent on the resource occupied by the NZP SRS, and interference with the NZP SRS can be avoided.
  • the DCI may specifically be that receive DCI sent by the network device for scheduling uplink transmission, wherein the DCI comprises the activation information which is used to activate a ZP DMRS or a ZP PTRS in a physical resource region that carries the uplink transmission.
  • the uplink transmission may be uplink data transmission, or may also be reported as uplink channel state information (CSI), which is not specifically limited in this embodiment.
  • CSI uplink channel state information
  • a terminal and a network device may pre-arrange, or the network device configures a physical resource or a DMRS port used by a ZP DMRS.
  • the terminal receives DCI for scheduling uplink transmission, it needs to perform the uplink transmission in a time slot. So the ZP DMRS may be activated in the time slot, that is, no uplink data, uplink CSI, or DMRS is sent on the physical resource corresponding to the ZP DMRS in the time slot or the DMRS port of the ZP DMRS.
  • a terminal and other terminal perform Multi-User Multiple-Input Multiple-Output (MU-MIMO) transmission
  • MU-MIMO Multi-User Multiple-Input Multiple-Output
  • a terminal and a network device may pre-arrange, or the network device configures a physical resource or a PTRS port used by a ZP PTRS.
  • the terminal receives DCI for scheduling uplink transmission, it needs to perform the uplink transmission in a time slot. So the ZP PTRS may be activated in the time slot, that is, no uplink data, uplink CSI, or DMRS is sent on the physical resource corresponding to the ZP PTRS in the time slot or the PTRS port of the ZP PTRS.
  • a terminal and other terminal perform MU-MIMO transmission, if two terminals use different PTRS ports and different ports occupy different physical resources, a terminal may not send the uplink signal on a physical resource, where a multiplexing terminal sends a PTRS, to reduce interference with the multiplexing terminal.
  • the activation information may further indicate that the activated uplink reference signal is a ZP ULRS or a NZP ULRS.
  • the activation information may be represented by 2-bit information. For example, 00 may indicate an activated state; 01 may indicate that the activated uplink reference signal is a NZP ULRS; 10 may indicate that the activated uplink reference signal is a ZP ULRS; and 11 is temporarily not used.
  • the terminal needs to send the NZP ULRS on a corresponding resource; if the activated uplink reference signal is a ZP ULRS, the terminal does not need to send an uplink reference signal on a corresponding resource and need to reserve a corresponding resource. In this way, whether a terminal sends a NZP ULRS or needs to reserve a resource of a resource corresponding to a NZP ULRS sent by other terminal, it may be indicated by a same signaling, thereby simplifying signaling design.
  • the activation information may further indicate to select a resource occupied by the activated zero-power uplink reference signal in the plurality of resources configured for the ZP ULRS indicated by the resource configuration information.
  • the network device may pre-configure a plurality of resources occupied by the ZP ULRS.
  • the activation information may specifically select at least one resource occupied by the ZP ULRS from a plurality of resources occupied by the ZP ULRS configured by the network device. For example, it may be indicated in a manner of an index or a bitmap.
  • the activation information may further indicate an antenna port occupied by the activated zero-power uplink reference signal.
  • the activation information may indicate a DMRS port occupied by the ZP DMRS or a PTRS port occupied by the ZP PTRS, indicating that other terminal sends a DMRS port or a PTRS port occupied by transmission on the same resource.
  • the ZP ULRS does not need to occupy a resource, that is, the resource occupied by the ZP ULRS is idle; if the ZP ULRS is activated, the resource occupied by the ZP ULRS may be determined based on configuration information of the ZP ULRS.
  • the ZP ULRS and the NZP ULRS are a same type of uplink reference signal, or are different types of uplink reference signal, which is not specifically limited in this embodiment.
  • a DMRS and/or a PTRS may not be sent on the resource occupied by the ZP DMRS.
  • a DMRS and/or a SRS may not be sent on the resource occupied by the ZP PTRS.
  • the provided method for transmitting an uplink signal according to the present disclosure may be used to enable other terminal to flexibly perform resource idle on a corresponding resource when other terminal sends an uplink reference signal, thereby avoiding interference of an uplink signal sent by other terminal on these uplink reference signals. So reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • a resource occupied by the zero-power uplink reference signal is further determined based on the configuration information, so that no uplink data is sent on the resource, and/or no non-zero-power uplink reference signal is sent on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • FIG. 2 is a schematic flowchart of another method for transmitting an uplink signal according to another embodiment of the present disclosure, as shown in FIG. 2 .
  • ZP ULRS zero-power uplink reference signal
  • NZP ULRS non-zero-power uplink reference signal
  • the receiving no uplink data on the resource may specifically be: perform rate matching or puncture processing on uplink data on the resource.
  • a performing entity of 201 ⁇ 203 may be a network device.
  • the main idea of this embodiment is to activate a zero-power uplink reference signal by configuration of a network device and indicating to a terminal,.
  • some terminals send an uplink reference signal (that is, a non-zero-power uplink reference signal)
  • other terminals may be simultaneously indicated to perform a resource idle on a corresponding resource, thereby avoiding interference of the uplink reference signals transmitted by other terminals, and improving transmission performance of these uplink reference signals.
  • the configuration information is further sent to a terminal, so that no uplink data is received on the resource, and/or no non-zero-power uplink reference signal is received on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • the ZP ULRS may comprise, but is not limited to, an existing ULRS such as a ZP SRS, a ZP DMRS, or a ZP PTRS, or other ZP that may also be newly defined by a NR system, which is not particularly limited in this embodiment.
  • the NZP ULRS may comprise, but is not limited to, a NZP SRS, a NZP DMRS, or a NZP PTRS, or other NZP ULRS that may also be newly defined by a NR system, which is not particularly limited in this embodiment.
  • 202 it may specifically be that send configuration information of a ZP ULRS to a terminal through high-layer signaling or Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the high-layer signaling may be a radio resource control (RRC) message
  • configuration information of the ZP ULRS may specifically be carried by an information element (IE) in a RRC message, wherein the RRC message may be a RRC message in the prior art, such as a RRC CONNECTION RECONFIGURATION message, which is not limited in this embodiment.
  • the configuration information of the ZP ULRS is carried by an existing RRC message with an extensional IE, or the RRC message may also be a RRC message different from that existing in the prior art.
  • the high-layer signaling may be a Media Access Control (MAC) Control Element (CE) message
  • MAC Media Access Control
  • CE Control Element
  • the configuration information of the ZP ULRS may be carried by adding a new MAC CE message.
  • the obtained configuration information may comprise, but is not limited to, resource configuration information and activation information, which is not specifically limited in this embodiment.
  • the resource configuration information and the activation information may be two pieces of independent information or may be one piece of information, which is not specifically limited in this embodiment.
  • the network device may send the resource configuration information of the ZP ULRS to the terminal through a RRC message.
  • the network device may send the activation information of the ZP ULRS to the terminal through DCI or a MAC CE message.
  • the resource configuration information indicates a resource configured for the ZP ULRS.
  • the resource may comprise, but is not limited to, at least one of a time domain resource, a frequency domain resource, and a sequence resource, which is not specifically limited in this embodiment.
  • the time domain resource may be a time slot in which the ZP ULRS is located or an Orthogonal Frequency Division Multiple (OFDM) symbol.
  • OFDM Orthogonal Frequency Division Multiple
  • the frequency domain resource may be a subcarrier or a physical resource block (RB) occupied by the ZP ULRS.
  • RB physical resource block
  • the sequence resource may be a cycle shift, an Orthogonal Cover Code (OCC) or a sequence Identity (ID) used by the ZP ULRS.
  • OCC Orthogonal Cover Code
  • ID sequence Identity
  • the resource configured for the ZP ULRS may be multiplexed with a resource configured for a corresponding NZP ULRS.
  • the network device may configure same N resources (N is an integer greater than or equal to 1) shared by the NZP ULRS and the ZP ULRS, and then indicate which resource is occupied by the ZP ULRS through the activation information.
  • N is an integer greater than or equal to 1
  • the activation information indicates whether to activate the ZP ULRS.
  • the 'activation' may also be referred to as triggering, and may also be referred to as enabling, which is not specifically limited in this embodiment.
  • the activation information may be represented by 1-bit information. For example, 1 may indicate an activated state; and 0 may indicate an inactivated state.
  • 202 it may specifically be that send DCI to the terminal, wherein the DCI comprises a non-period trigger signaling of the ZP SRS, which is used to trigger the ZP SRS.
  • the non-period trigger signaling of the ZP SRS may be used as the activation information.
  • the terminal B may be triggered a ZP SRS corresponding to the NZP SRS by a non-period trigger signaling of a ZP SRS, so that no uplink signal is sent on the resource occupied by the NZP SRS, and interference with the NZP SRS can be avoided.
  • the DCI may specifically be that send DCI for scheduling uplink transmission to the terminal, wherein the DCI comprises the activation information which is used to activate a ZP DMRS or a ZP PTRS in a physical resource region that carries the uplink transmission.
  • the uplink transmission may be uplink data transmission, or may also be reported as uplink channel state information (CSI), which is not specifically limited in this embodiment.
  • CSI uplink channel state information
  • a terminal and a network device may pre-arrange, or the network device configures a physical resource or a DMRS port used by a ZP DMRS.
  • the terminal receives DCI for scheduling uplink transmission, it needs to perform the uplink transmission in a time slot. So the ZP DMRS may be activated in the time slot, that is, no uplink data, uplink CSI, or DMRS is sent on the physical resource corresponding to the ZP DMRS in the time slot or the DMRS port of the ZP DMRS.
  • a terminal and other terminal perform Multi-User Multiple-Input Multiple-Output (MU-MIMO) transmission
  • MU-MIMO Multi-User Multiple-Input Multiple-Output
  • a terminal and a network device may pre-arrange, or the network device configures a physical resource or a PTRS port used by a ZP PTRS.
  • the terminal receives DCI for scheduling uplink transmission, it needs to perform the uplink transmission in a time slot. So the ZP PTRS may be activated in the time slot, that is, no uplink data, uplink CSI, or DMRS is sent on the physical resource corresponding to the ZP PTRS in the time slot or the PTRS port of the ZP PTRS.
  • a terminal and other terminal perform MU-MIMO transmission, if two terminals use different PTRS ports and different ports occupy different physical resources, a terminal may not send the uplink signal on a physical resource, where a multiplexing terminal sends a PTRS, to reduce interference with the multiplexing terminal.
  • the activation information may further indicate that the activated uplink reference signal is a ZP ULRS or a NZP ULRS.
  • the activation information may be represented by 2-bit information. For example, 00 may indicate an activated state; 01 may indicate that the activated uplink reference signal is a NZP ULRS; 10 may indicate that the activated uplink reference signal is a ZP ULRS; and 11 is temporarily not used.
  • the terminal needs to send the NZP ULRS on a corresponding resource; if the activated uplink reference signal is a ZP ULRS, the terminal does not need to send an uplink reference signal on a corresponding resource and need to reserve a corresponding resource. In this way, whether a terminal sends a NZP ULRS or needs to reserve a resource of a resource corresponding to a NZP ULRS sent by other terminal, it may be indicated by a same signaling, thereby simplifying signaling design.
  • the activation information may further indicate to select a resource occupied by the activated zero-power uplink reference signal in the plurality of resources configured for the ZP ULRS indicated by the resource configuration information.
  • the network device may pre-configure a plurality of resources occupied by the ZP ULRS.
  • the activation information may specifically select at least one resource occupied by the ZP ULRS from a plurality of resources occupied by the ZP ULRS configured by the network device. For example, it may be indicated in a manner of an index or a bitmap.
  • the activation information may further indicate an antenna port occupied by the activated zero-power uplink reference signal.
  • the activation information may indicate a DMRS port occupied by the ZP DMRS or a PTRS port occupied by the ZP PTRS, indicating that other terminal sends a DMRS port or a PTRS port occupied by transmission on the same resource.
  • the ZP ULRS if the ZP ULRS is not activated, the ZP ULRS does not need to occupy a resource, that is, the resource occupied by the ZP ULRS is idle; if the ZP ULRS is activated, the resource occupied by the ZP ULRS may be determined based on configuration information of the ZP ULRS.
  • the ZP ULRS and the NZP ULRS are a same type of uplink reference signal, or are different types of uplink reference signal, which is not specifically limited in this embodiment.
  • a DMRS and/or a PTRS may not be sent on the resource occupied by the ZP DMRS.
  • a DMRS and/or a SRS may not be sent on the resource occupied by the ZP PTRS.
  • the provided method for transmitting an uplink signal according to the present disclosure may be used to enable other terminal to flexibly perform resource idle on a corresponding resource when other terminal sends an uplink reference signal, thereby avoiding interference of an uplink signal sent by other terminal on these uplink reference signals. So reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • the configuration information is further sent to a terminal, so that no uplink data is received on the resource, and/or no non-zero-power uplink reference signal is received on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • FIG. 3 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure, as shown in FIG. 3 .
  • a terminal of this embodiment may comprise a receiving unit 31, a determining unit 32, and a performing unit 33.
  • a receiving unit 31, configured to receive configuration information, sent by a network device, of a zero-power uplink reference signal; a determining unit 32, configured to determine a resource occupied by the zero-power uplink reference signal based on the configuration information; and a performing unit 33, configured to send no uplink data on the resource; and/or, send no non-zero-power uplink reference signal on the resource.
  • the zero-power uplink reference signal may comprise, but is not limited to, a zero-power sounding reference signal, a zero-power demodulation reference signal, or a zero-power phase tracking reference signal, which is not specifically limited in this embodiment.
  • the non-zero-power uplink reference signal may comprise, but is not limited to, a non-zero-power sounding reference signal, a non-zero-power demodulation reference signal, or a non-zero-power phase tracking reference signal, which is not specifically limited in this embodiment.
  • the receiving unit 31 is specifically configured to receive configuration information of the zero-power uplink reference signal sent by the network device through high-layer signaling or downlink control information.
  • the high-layer signaling may comprise, but is not limited to, a radio resource control message or a media access control element message, which is not specifically limited in this embodiment.
  • the configuration information may comprise, but is not limited to, resource configuration information and activation information, which is not specifically limited in this embodiment; wherein the resource configuration information indicates a resource configured for the zero-power uplink reference signal; the activation information indicates whether to activate the zero-power uplink reference signal.
  • the determining unit 32 may be specifically configured to determine a resource occupied by the zero-power uplink reference signal based on the resource configuration information, when the activation information indicates to activate the zero-power uplink reference signal.
  • the resource configured for the zero-power uplink reference signal may be multiplexed with a resource configured for a corresponding non-zero-power uplink reference signal.
  • the receiving unit 31 may specifically be configured to receive downlink control information sent by the network device, wherein the downlink control information comprises a non-period trigger signaling of a zero-power sounding reference signal which is used to trigger a zero-power sounding reference signal.
  • the receiving unit 31 may specifically be configured to receive downlink control information sent by the network device for scheduling uplink transmission, wherein the downlink control information comprises the activation information which is used to activate a zero-power demodulation reference signal or a zero-power phase tracking reference signal in a physical resource region that carries the uplink transmission.
  • the activation information may further indicate that the activated uplink reference signal is a zero-power uplink reference signal or a non-zero-power uplink reference signal.
  • the activation information may further indicate to select a resource occupied by the activated zero-power uplink reference signal in the plurality of resources configured for the zero-power uplink reference signal indicated by the resource configuration information.
  • the activation information may further indicate an antenna port occupied by the activated zero-power uplink reference signal.
  • the resource may comprise, but is not limited to, at least one of a time domain resource, a frequency domain resource, and a sequence resource, which is not specifically limited in this embodiment.
  • the performing unit 33 is specifically configured to perform rate matching or puncturing processing on uplink data on the resource.
  • the zero-power uplink reference signal and the non-zero-power uplink reference signal are a same type of uplink reference signal, or are different types of uplink reference signal, which is not specifically limited in this embodiment.
  • a resource occupied by the zero-power uplink reference signal is further determined based on the configuration information by the determining unit, so that no uplink data is sent by the performing unit on the resource, and/or no non-zero-power uplink reference signal is sent by the performing unit on the resource. Because the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • FIG. 4 is a schematic structural diagram of a network device according to another embodiment of the present disclosure, as shown in FIG. 4 .
  • the network device of this embodiment may comprise an obtaining unit 41, a transmitting unit 42, and a performing unit 43.
  • the obtaining unit 41 is configured to obtain configuration information of a zero-power uplink reference signal based on a resource occupied by the zero-power uplink reference signal;
  • the sending unit 42 is configured to send the configuration information to a terminal;
  • the performing unit 43 is configured to receive no uplink data on the resource; and/or, receive no non-zero-power uplink reference signal on the resource.
  • the sending unit 42 may specifically be configured to send the configuration information to a terminal through high-layer signaling or downlink control information.
  • the configuration information may comprise, but is not limited to, resource configuration information and activation information, which is not specifically limited in this embodiment; wherein the resource configuration information indicates a resource configured for the zero-power uplink reference signal; the activation information indicates whether to activate the zero-power uplink reference signal.
  • the performing unit 43 is specifically configured to perform rate matching or puncturing processing on uplink data on the resource.
  • the zero-power uplink reference signal and the non-zero-power uplink reference signal are a same type of uplink reference signal, or are different types of uplink reference signal, which is not specifically limited in this embodiment.
  • the obtaining unit obtaining configuration information of a zero-power uplink reference signal based on a resource occupied by the zero-power uplink reference signal
  • the configuration information is further sent to a terminal by the sending unit, so that no uplink data is received by the performing unit on the resource, and/or no non-zero-power uplink reference signal is received by the performing unit on the resource.
  • the terminal performs a resource reservation, it effectively avoids that an uplink signal transmitted by the terminal on the reserved resource has interference with an uplink reference signal transmitted by other terminal on the reserved resource, so that reliable transmission of the uplink reference signal of the terminal can be ensured, thereby improving transmission performance of these uplink reference signals.
  • the disclosed systems, devices and methods may be implemented by other means.
  • the device embodiments described above are merely schematic.
  • the partitioning of the units may be a partitioning in logical functions. There may be other manners for partitioning in actual implementation. For example, multiple units or components may be combined together or integrated into another system, or some features can be omitted or not executed.
  • mutual couplings or direct couplings or communication connections that are shown or discussed may be indirect couplings or communication connections through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separated components may be or may not be physically separated.
  • the components shown as units may be or may not be physical units, that is, they may be located in one place or may be distributed on a plurality of network units. Part or all of the units may be selected according to actual needs to achieve the purposes of the solutions of the embodiments of the present application.
  • all functional units in the embodiments of the present application may be integrated into one processing unit. Or, each unit exists independently in physics. Or, two or more units may be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or in the form of hardware plus software functional units.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP17911108.3A 2017-05-26 2017-05-26 Verfahren zur übertragung eines uplink-signals, endgerät und netzwerkvorrichtung Active EP3624477B1 (de)

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US11706785B2 (en) 2023-07-18
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IL270679B1 (en) 2023-12-01
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TWI769246B (zh) 2022-07-01
BR112019024587A2 (pt) 2020-06-09

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